Could there really have been a time when tennis trading cards were popular? Not sure about that, but in the late 1970s -- the golden age of Open tennis -- they at least existed. My wife found a cache at a little Portland knickknack shop called Smut. But one suspects that the card company didn't specialize in tennis, for some of the information is a bit dubious. Panatta was runner-up at Roland Garros in 1973 and 1975?